Games : What XCOM in-game descriptions are totally broken?

The text for the MEC-carried EMP states exactly the opposite of what it does. The decoy device description would lead one to try it before activating a pod, but it only works after. What other descriptions are shockingly terrible?

Last I checked, at least these two are still present in the otherwise excellent Long War mod. Perhaps if we had a list we could convince those devs to address...